Fader IR Filter (for SLR Cameras): Adjustable wavelength range, covering 550-750nm Product name: Adjustable Infrared (FADER IR)Adjustable wavelength range: 550nm - 750nmLens material: Special infrared optical glassLens frame material: Aviation aluminumLens frame thickness: 6.6mmLens pressure spring: Screw-in typeOptional diameters: 37/40.5/43/46/49/52/55/58/62/67/72/77/82/86/95/105mmPlace of origin: Shenzhen, ChinaMain function: Suitable for infrared photography creation. It is a very practical integrated adjustable infrared filter, which can be adjusted from 550nm to 750nm, providing more operable space for your infrared photography creation.